Finding the Third Proportional to 8,248,842 and 12,479,432

Step by Step Solution

1. Step 1: Write the proportion equation
   8,248,842 : 12,479,432 = 12,479,432 : x
2. Step 2: Convert to fraction form
   8,248,842/12,479,432 = 12,479,432/x
3. Step 3: Cross multiply
   8,248,842x = 12,479,432 × 12,479,432
4. Step 4: Simplify right side
   8,248,842x = 155,736,223,042,624
5. Step 5: Solve for x
   x = 155,736,223,042,624/8,248,842
6. Step 6: Final answer
   x = 18,879,767.98